Re: [PATCH v5 0/2] ceph: fix the use-after-free bug for file_lock

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On 02/01/2023 19:50, Ilya Dryomov wrote:
On Wed, Dec 14, 2022 at 4:35 AM <xiubli@xxxxxxxxxx> wrote:
From: Xiubo Li <xiubli@xxxxxxxxxx>

Changed in V5:
- s/fl_inode/inode/

Changed in V4:
- repeat the afs in fs.h instead of adding ceph specific header file

Changed in V3:
- switched to vfs_inode_has_locks() helper to fix another ceph file lock
bug, thanks Jeff!
- this patch series is based on Jeff's previous VFS lock patch:
   https://patchwork.kernel.org/project/ceph-devel/list/?series=695950

Changed in V2:
- switch to file_lock.fl_u to fix the race bug
- and the most code will be in the ceph layer


Xiubo Li (2):
   ceph: switch to vfs_inode_has_locks() to fix file lock bug
   ceph: add ceph specific member support for file_lock

  fs/ceph/caps.c     |  2 +-
  fs/ceph/locks.c    | 24 ++++++++++++++++++------
  fs/ceph/super.h    |  1 -
  include/linux/fs.h |  3 +++
  4 files changed, 22 insertions(+), 8 deletions(-)

--
2.31.1

Hi Xiubo,

I have adjusted the title of the second patch to actually reflect its
purpose: "ceph: avoid use-after-free in ceph_fl_release_lock()".  With
that:

Reviewed-by: Ilya Dryomov <idryomov@xxxxxxxxx>

Hi Ilya,

Sure. Looks better.

I will revise it.

Thanks

- Xiubo


Thanks,

                 Ilya





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